88 PKOF. E. LONNBERQ : REMARKS ON 



digital pads surrounded by hair and quite free, not fused basally. 

 The hind foot of '■'■ Dams'" appears more similar to that of prui- 

 nosus by having at least two of the digital pads fused, and the 

 others more closely connected than in the genera just mentioned, 

 and without hair in the interdigital spaces, as well as with regard 

 to the weakness of the hallucal depression and the absence of hairs 

 in the same. The likeness between " Banis" And the prminosus 

 group is, however, not complete, because judging from Pocock's 

 figure (1918) it has no naked connection between the first and 

 fifth digital pads on one side and the plantar pad on the other. 

 Such a connection is, however, visible in the figure of the hind foot 

 of " Tremarctos thihetanus" figured by the same author in 1914 ; 

 and in fact this figure exhibits several featui^es similar to those of 

 the pruinosus, but the hind foot of the Thibetan Bear has quite 

 free digital pads and hair in the interdigital interspaces. The 

 fore feet of the latter are also very different in structure when 

 compared with those of the pruinosus group, as they have a very 

 large carpal pad expanded across the whole plantar surface and 

 only separated by naked and soft skin from the plantar pad. 



A comparison between the feet of Tremarctos and those of the 

 pridnosus group is scarcely needed. The fore feet of the former 

 have entirely free digital pads entirely surrounded by hairs, so 

 that a careful examination is needed to reveal the narrow and 

 incomplete connections with the plantar pad. The plantar pad is 

 broadly connected with the rather large carpal pad by means of 

 naked skin on the ulnar side ; it extends also backwards on the 

 radial side, and is there connected with a small pad. On the hind 

 feet of Tremarctos as well the digital pads are free and rather 

 thickly surrounded by hairs, so that the connections between the 

 digital pads and the plantar pad are entirely concealed until the 

 hairs are artificially divided. With the feet of Helarctos those of 

 the pi'uinosus group have no resemblance, as the former are much 

 less hairy, and this is, of course, still more the case with those of 

 Mehirsus. 



It is thus evident that the structure of the feet of the prui- 

 nosus Bears differs from that of all other Bears, and most certainly 

 from that of Ursus s. str. The question is then, whether this 

 difference is also connected with some other morphological 

 differences. 



Pocock has demonstrated that the noses of different Bears are 

 different in structure. It is very difficult to judge only from a 

 dry skin, but it appears as if the naked tract between the rhina- 

 rium and the upper lip was broader in the present pridnosus 

 specimen than in, for instance, U. arctos, Euarctos, Selenarctos, and 

 Tremarctos, but of course not so broad as in Helarctos. In the 

 present specimen, dry as it is, it measures about 1 cm., and is 

 equal in breadth to the narial septum. 



As the pruinosus Bear from Kansu is rather young, the 

 measurements of its skull have only relative value ; but, thanks to 

 the courtesy of Professor N. Holmgren, I have been able to 



